http-form-submit.js

const http=require('http');
const fs=require('fs');
http.createServer((req,res)=>{
    let body='';
    if(req.method==="GET")
    {
        res.writeHead(200,{'Content-Type':'text/html'});
        fs.readFile('./http-form-submit.html','UTF-8',(err,data)=>{
            if(err) throw err;
            res.write(data); 
            res.end(); 

        })

    }else if(req.method==="POST")
    {
        req.on('data',(data)=>{
            body += data;
        })
        req.on('end',()=>{
            res.writeHead(200,{'Content-Type':'text/html'});
            res.write(body,()=>{
                res.end();
            })
        })
        

    }else
    {
        res.writeHead(404,{'Content-Type':'text/plain'});
        res.end('404 ERROR');
    }
    
}).listen(4444);
console.log('its working');